On nonnegative operators and fully cyclic peripheral spectrum.
On nonnegative realization of partitioned spectra.
On nonnegative sign equivalent and sign similar factorizations of matrices.
On numerical range of sp(2n, C)
In this paper we studied the classical numerical range of matrices in sp(2n, C). We obtained some result on the relationship between the numerical range of a matrix in and that [...] of its diagonal block, the singular values of its off-diagonal block A2.
On orderings induced by the Loewner partial ordering
The partial ordering induced by the Loewner partial ordering on the convex cone comprising all matrices which multiplied by a given positive definite matrix become nonnegative definite is considered. Its relation to orderings which are induced by the Loewner partial ordering of the squares of matrices is presented. Some extensions of the latter orderings and their comparison to star orderings are given.
On pairs of matrices with property
On perfect conditioning of Vandermonde matrices on the unit circle.
On permutation symmetries of Hopfield model neural network.
On polynomial matrices.
On polynomial invariant chains of matrices and principal submatrices
On polynomials in two projections.
On potentially nilpotent double star sign patterns
A matrix whose entries come from the set is called a sign pattern matrix, or sign pattern. A sign pattern is said to be potentially nilpotent if it has a nilpotent realization. In this paper, the characterization problem for some potentially nilpotent double star sign patterns is discussed. A class of double star sign patterns, denoted by , is introduced. We determine all potentially nilpotent sign patterns in and , and prove that one sign pattern in is potentially stable.
On powers of non-negative matrices
On Powers of Non-Negative Matrices
On products of additive functions (a third approach).
On products of singular elements
On Projections in the Symmetric Power Space.
On projective equivalence of univariate polynomial subspaces.
On properties of quadratic matrices.
On Pseudo-proper Values of a Linear Transformations.